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[NETFILTER]: Fix HW checksum handling in ip_queue/ip6_queue 

The checksum needs to be filled in on output, after mangling a packet
ip_summed needs to be reset.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2005-08-23 10:10:35 -07:00 committed by David S. Miller
parent 1344a41637
commit 66a79a19a7
2 changed files with 14 additions and 0 deletions
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7
net/ipv4/netfilter/ip_queue.c
View File

@ -214,6 +214,12 @@ ipq_build_packet_message(struct ipq_queue_entry *entry, int *errp)
break;
case IPQ_COPY_PACKET:
if (entry->skb->ip_summed == CHECKSUM_HW &&
(*errp = skb_checksum_help(entry->skb,
entry->info->outdev == NULL))) {
read_unlock_bh(&queue_lock);
return NULL;
}
if (copy_range == 0 || copy_range > entry->skb->len)
data_len = entry->skb->len;
else
@ -385,6 +391,7 @@ ipq_mangle_ipv4(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
if (!skb_ip_make_writable(&e->skb, v->data_len))
return -ENOMEM;
memcpy(e->skb->data, v->payload, v->data_len);
e->skb->ip_summed = CHECKSUM_NONE;
e->skb->nfcache |= NFC_ALTERED;
/*

7
net/ipv6/netfilter/ip6_queue.c
View File

@ -211,6 +211,12 @@ ipq_build_packet_message(struct ipq_queue_entry *entry, int *errp)
break;
case IPQ_COPY_PACKET:
if (entry->skb->ip_summed == CHECKSUM_HW &&
(*errp = skb_checksum_help(entry->skb,
entry->info->outdev == NULL))) {
read_unlock_bh(&queue_lock);
return NULL;
}
if (copy_range == 0 || copy_range > entry->skb->len)
data_len = entry->skb->len;
else
@ -381,6 +387,7 @@ ipq_mangle_ipv6(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
if (!skb_ip_make_writable(&e->skb, v->data_len))
return -ENOMEM;
memcpy(e->skb->data, v->payload, v->data_len);
e->skb->ip_summed = CHECKSUM_NONE;
e->skb->nfcache |= NFC_ALTERED;
/*